Scientists have found that these particular chemicals are involved in regulating mood, but they are unsure of the exact ways that they work.

科学家发现这些特别的化学物质可以调整心情，但是他们不确定他们作用的具体方式。

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Scientists have found that these particular chemicals are involved in regulating mood, but they are unsure of the exact ways that they work.

科学家发现这些特别的化学物质可以调整心情，但是他们不确定他们作用的具体方式。

youdao